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Product Features and Contractor Benefits 10K Ohm Type II Thermistor: Provides a standard resistance curve compatible with various DDC controllers
Can I use an auto-reset switch in place of this manual reset part
Safety Monitoring: Continuous flame rectification sensing and limit switch monitoring ensure secure unit operation
Direct Replacement: Verified as identical to Danfoss 068U220600
Robertshaw 780-790 HSI Module 30067439-890 Product Features and Contractor BenefitsFor field techs dealing with intermittent ignition failures or flame sensing issues on gas fired heating systems, the Robertshaw 780 790 HSI Module provides a reliable, direct replacement solution. This hot surface ignition control is engineered to drop into tight control cabinets, serving as the primary replacement for the HS780 17NL 304A as well as the 104A and 108A variants. Operating on a standard 120V AC ignition system, the module features a
